I suggest you ...

PR's only allow for weight not time

There is no way to add a PR that isn't a weight, for example if I want to add a time on a rower or run etc which are all distance and time there is no ability for this. This also includes things like rope climb and box jump heights and other things that are not weight based.

Further to this, it would be great to be able to add these PRs from within the app. Time, distance and reps PRs for movements like handstand hold, handstand walking, and max pull-ups/push-ups/DU would be awesome.